Site Considerations for Equipment Installation, Grounding, and Wiring Manual
D301452X012
October 2019
6 Installation
AC-powered equipment with a conductive case should have the case grounded. If you do not see a
chassis ground wire, do not assume that it is safe to touch this equipment. If you notice that
equipment has been grounded to pipes, conduit, structural steel, etc., you should be cautious.
Note
The policy of the American Water Works Association (AWWA) on the grounding of electric circuits
on water pipes states: “The American Water Works Association (AWWA) opposes the grounding of
electrical systems to pipe systems conveying water to the customer’s premises…”
Be sure that the voltage between any two points in the system is less than the stand-off voltage.
Exceeding the stand-off voltage may damage the equipment and cause the equipment to fail.
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